D2D Communication Identifier Segmentation for Cellular Compatibility
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Solution Overview
Problem
Current 3GPP standards lack specifications for appropriately controlling Device-to-Device (D2D) communication, making it difficult for D2D communication to be compatible with cellular communication.
Innovation Solution
A mobile communication system that supports D2D communication by transmitting a D2D start request from a user terminal to the network, including an application identifier and a terminal identifier, allowing the network to recognize participating terminals and applications, thereby enabling proper control of D2D communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If D2D communication is introduced without standardized control specifications, then new communication functionality is added, but compatibility with cellular communication deteriorates
Solution Approach 1:
The patent segments communication data into distinct types by introducing separate data structures: D2D communication data includes a D2D communication identifier and D2D payload, while cellular communication data includes a cellular communication identifier and cellular payload. This segmentation allows the network to differentiate and manage D2D and cellular communication data separately, ensuring compatibility while enabling new functionality.
Solution Approach 2:
The network acts as an intermediary by receiving D2D start requests from user terminals, assigning D2D communication identifiers, and managing D2D communication data separately. This intermediary control mechanism ensures that D2D communication operates within the standardized cellular framework, maintaining compatibility while enabling versatile D2D functionality.
2Device complexity
If D2D communication data is mixed with cellular communication data, then network control is simplified, but data management precision deteriorates
Solution Approach 1:
The patent implements segmentation by creating distinct data structures for D2D and cellular communication. D2D communication data contains a D2D communication identifier, while cellular communication data contains a cellular communication identifier. This segmentation enables precise data management and routing without increasing overall network control complexity, as the differentiation is handled through standardized identifier fields.
3Reliability
If standardized control specifications for D2D communication are implemented, then compatibility with cellular communication is improved, but system complexity increases
Solution Approach 1:
The patent applies universality by designing a multi-functional data structure that can accommodate both D2D and cellular communication. The communication data structure includes identifiers and payload fields that work for both communication types. This universal framework improves compatibility while avoiding excessive complexity by using a single, flexible data model rather than entirely separate systems.
Data Source
AI summary
A mobile communication system, which supports D2D communication that is direct device-to-device communication that is performed by using a radio resource assigned from a network, comprises: a user terminal that transmits a D2D start request for starting the D2D communication to the network, wherein the D2D start request includes an application identifier indicating an application used by the user terminal in the D2D communication, and a terminal identifier indicating another user terminal that is a communication partner of the user terminal in the D2D communication.